Question

The Arithmetic mean of the observations 4, 5, 8, 10, 13 is a) 4 b) 8 c) 13 d) none of these

Answer 1

Answer:

Option b) 8

Explanation:

Given data points,

      xi = 4 , 5, 8, 10, 13  ⇒ ∑xi = 40

n = 5

Arithmetic mean = ∑xi / n

                             = 4 + 5 + 8 + 10 + 13 / 5

                             =  40 / 5

                             = 8

Answer 2

Answer:

40

Explanation:

mean= sum of observation / number of observation

mean = 4+5+8+10+13/5

mean=40/5

mean =8